PL371772A1 - Device for monitoring transmission antennae of electromagnetic detection systems - Google Patents

Device for monitoring transmission antennae of electromagnetic detection systems

Info

Publication number
PL371772A1
PL371772A1 PL02371772A PL37177202A PL371772A1 PL 371772 A1 PL371772 A1 PL 371772A1 PL 02371772 A PL02371772 A PL 02371772A PL 37177202 A PL37177202 A PL 37177202A PL 371772 A1 PL371772 A1 PL 371772A1
Authority
PL
Poland
Prior art keywords
detection systems
electromagnetic detection
monitoring transmission
transmission antennae
antennae
Prior art date
Application number
PL02371772A
Other languages
Polish (pl)
Inventor
François Schmidt
Daniel Heyden
Original Assignee
Exaqt S.A.De C.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Exaqt S.A.De C.V. filed Critical Exaqt S.A.De C.V.
Publication of PL371772A1 publication Critical patent/PL371772A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/04—Screened antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

A stolen goods detection antenna control system has an untuned antenna (4) fed from an H bridge power amplifier (6) with square wave voltage to create a triangular current.
PL02371772A 2001-12-21 2002-12-17 Device for monitoring transmission antennae of electromagnetic detection systems PL371772A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0116766A FR2834132B1 (en) 2001-12-21 2001-12-21 DEVICE FOR CONTROLLING EMISSION ANTENNAS OF ELECTROMAGNETIC DETECTION SYSTEMS

Publications (1)

Publication Number Publication Date
PL371772A1 true PL371772A1 (en) 2005-06-27

Family

ID=8870916

Family Applications (1)

Application Number Title Priority Date Filing Date
PL02371772A PL371772A1 (en) 2001-12-21 2002-12-17 Device for monitoring transmission antennae of electromagnetic detection systems

Country Status (17)

Country Link
US (2) US20050095983A1 (en)
EP (1) EP1456905B1 (en)
JP (1) JP4095964B2 (en)
CN (1) CN100452101C (en)
AT (1) ATE300792T1 (en)
AU (1) AU2002364661A1 (en)
CA (1) CA2470160A1 (en)
DE (1) DE60205277T2 (en)
ES (1) ES2247426T3 (en)
FR (1) FR2834132B1 (en)
HU (1) HU226181B1 (en)
IL (2) IL162453A0 (en)
MX (1) MXPA04005842A (en)
PL (1) PL371772A1 (en)
RU (1) RU2308130C2 (en)
WO (1) WO2003055005A1 (en)
ZA (1) ZA200404712B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2910749B1 (en) * 2006-12-22 2010-12-17 Valeo Securite Habitacle SIGNAL TRANSMITTING-RECEIVING DEVICE FOR MOTOR VEHICLE
DE102007043124B4 (en) * 2007-09-10 2016-03-31 Denso Corporation Apparatus and method for radio wave transmission
EP3235267B1 (en) * 2014-12-17 2018-08-08 Widex A/S A hearing aid

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274090A (en) * 1980-02-19 1981-06-16 Knogo Corporation Detection of articles in adjacent passageways
CN2050632U (en) * 1987-10-23 1990-01-03 张刚 Double route fully automatic sensitive anti-theft instrument
FR2624671B1 (en) * 1987-12-09 1990-12-14 Merlin Gerin DEVICE FOR CONTROLLING A STATIC SWITCH
US4963880A (en) * 1988-05-03 1990-10-16 Identitech Coplanar single-coil dual function transmit and receive antenna for proximate surveillance system
US4949050A (en) * 1989-09-12 1990-08-14 Harris Corporation RF power amplifier system having amplifier protection
FR2705844B1 (en) * 1993-05-28 1995-07-21 Thomson Csf Method and device for amplitude modulation of a radiofrequency signal.
US5748891A (en) * 1994-07-22 1998-05-05 Aether Wire & Location Spread spectrum localizers
EP0798681A1 (en) * 1996-03-29 1997-10-01 Sensormatic Electronics Corporation Pulsed interrogation signal in harmonic EAS system
US5844130A (en) * 1996-04-03 1998-12-01 Ssi Technologies Apparatus for maintaining a constant radial distance between a transmitting circuit and an antenna coil
US6204729B1 (en) * 1997-12-19 2001-03-20 Nikon Research Corporation Of America H-bridge power amplifier for a motor
US6366474B1 (en) * 2000-09-29 2002-04-02 Jeff Gucyski Switching power supplies incorporating power factor correction and/or switching at resonant transition

Also Published As

Publication number Publication date
EP1456905B1 (en) 2005-07-27
AU2002364661A1 (en) 2003-07-09
FR2834132A1 (en) 2003-06-27
RU2004122390A (en) 2006-01-20
ES2247426T3 (en) 2006-03-01
IL162453A (en) 2009-11-18
MXPA04005842A (en) 2004-09-10
JP2005528673A (en) 2005-09-22
CN1606816A (en) 2005-04-13
CA2470160A1 (en) 2003-07-03
CN100452101C (en) 2009-01-14
JP4095964B2 (en) 2008-06-04
WO2003055005A1 (en) 2003-07-03
US20080119146A1 (en) 2008-05-22
RU2308130C2 (en) 2007-10-10
IL162453A0 (en) 2005-11-20
US20050095983A1 (en) 2005-05-05
DE60205277D1 (en) 2005-09-01
FR2834132B1 (en) 2005-03-18
HU226181B1 (en) 2008-06-30
HUP0402353A2 (en) 2005-02-28
ATE300792T1 (en) 2005-08-15
EP1456905A1 (en) 2004-09-15
DE60205277T2 (en) 2006-06-08
ZA200404712B (en) 2005-05-24

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Legal Events

Date Code Title Description
DISC Decisions on discontinuance of the proceedings (taken after the publication of the particulars of the applications)